/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package NamNH;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

/**
 *
 * @author dukynguyen
 */
public class UploadDocument extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            Context ctx = new InitialContext();
            NamNHSessionBeanLocal NLocal = (NamNHSessionBeanLocal) ctx.lookup("NamNHSessionBeanLocalJNDI");
            HttpSession session = request.getSession(true);

            boolean isMultiPart = ServletFileUpload.isMultipartContent (request);

                FileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload(factory);
                List items = null;
                try
				{
                items = upload.parseRequest (request);
                } catch(FileUploadException e)
				{
                e.printStackTrace ();
                }
                Iterator iter = items.iterator ();
                String fileName ="";
                Hashtable params=new Hashtable();
                while(iter.hasNext ())
				{
                FileItem item = (FileItem)iter.next ();
                if(item.isFormField ())
				{
                    params.put(item.getFieldName(),item.getString());
                } else
				{
                    try
					{
                        String itemName = item.getName ();
                         fileName = itemName.substring (
                                itemName.lastIndexOf ("\\") + 1);

                         if(!fileName.trim().isEmpty())
                         {
                        String RealPath = getServletContext ().getRealPath ("/")
                                        + "fileupload\\" + fileName;
                        //System.out.println("Rpath " + RealPath);
                        File savedFile = new File(RealPath);
                        item.write (savedFile);
                       }
                    } catch(Exception e) {
                        e.printStackTrace ();
                    }
                }
                }
                String docid = (String) params.get("txtDocid");
                String url=fileName;
                if(NLocal.updateDocumment(Integer.parseInt(docid), url))
                {
                    request.getRequestDispatcher("NamNHServlet?action=USVIEWEV").forward(request, response);
                }
        } catch (Exception e) {
            e.printStackTrace();
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
